Image Capture Device Lamp Control for Exposure Quality
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Solution Overview
Problem
Image acquisition devices struggle to maintain optimal brightness in varying environmental conditions, leading to poor image quality in low-light situations such as rainy weather or night-time, as existing solutions either overexpose or underexpose images.
Innovation Solution
An image acquisition device equipped with both an infrared lamp and a white light lamp, controlled by a processor that adjusts their switching states based on current acquisition parameters like magnification, brightness, and gain, ensuring a moderate environment brightness through precise control of the lamps and filters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If only an infrared lamp is used for low-light imaging, then the device can capture images in dark environments, but the image quality becomes poor and overexposed
Solution Approach 1:
The patent combines both infrared lamp and white light lamp in the same imaging device, allowing the system to merge infrared illumination with visible light illumination. This combination enables the device to maintain good image quality across different lighting conditions by utilizing both light sources appropriately, avoiding the overexposure problems that occur when using only infrared lighting.
Solution Approach 2:
The imaging device is designed with multi-functionality by incorporating both infrared and white light lamps, making it capable of operating effectively in both low-light and normal-light conditions. The device can switch between or combine different lighting modes to adapt to various environmental conditions, providing universal functionality across different scenarios.
2Manufacturing precision
If the infrared lamp and white light lamp switch frequently to adapt to changing light conditions, then the image quality is maintained, but the filter service life is reduced
Solution Approach 1:
The patent implements dynamic control of the infrared and white light lamps based on real-time detection of ambient light levels. The processor continuously monitors lighting conditions and dynamically adjusts which lamp is active, optimizing image quality while reducing unnecessary switching. This dynamic adaptation minimizes the frequency of filter switching compared to static or more frequently switching systems.
Solution Approach 2:
The system incorporates feedback mechanisms where the processor detects ambient light levels and uses this information to control the switching between infrared and white light lamps. This feedback-based control ensures that switching occurs only when necessary to maintain image quality, thereby extending filter service life by avoiding unnecessary switching operations.
3Manufacturing precision
If the device uses traditional metering and exposure calculation to adjust exposure parameters, then the image quality is optimized, but the switching speed between operation modes is slow
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing exposure parameter relationships for different operation modes. When switching between modes, the system directly estimates the target exposure parameters based on pre-established relationships rather than performing time-consuming metering and calculation processes. This approach significantly increases switching speed while maintaining exposure parameter accuracy.
Solution Approach 2:
The system uses copying by directly estimating target exposure parameters based on the current operation mode's exposure parameters, rather than recalculating from scratch. This estimation approach copies the essential exposure characteristics from the current mode and adapts them to the target mode, achieving fast switching without sacrificing parameter accuracy.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution ensures better image quality across all magnifications by providing the necessary light source, reducing overexposure and underexposure issues, and extending the service life of filters by minimizing frequent switching.
Implementation Method 1
an infrared lamp and a white light lamp are arranged in the image acquisition device
Implementation Method 2
a white light lamp are arranged in the image acquisition device
Data Source
Figure 1~2
Figure 3
AI summary
The embodiments of the present application provides an image acquisition device, a control method and a machine readable storage medium, the image acquisition device includes: a processor, an infrared lamp, and a white light lamp. The processor in the image acquisition device is used to control the infrared lamp and white light lamp. Specifically, the processor obtains current acquisition parameters of the image acquisition device, compares the magnification in the current acquisition parameters with a preset first magnification threshold and a preset second magnification threshold to obtain a comparison result, and controls switching states of the infrared lamp and the white light lamp according to the comparison result, the brightness of the environment and the gain, wherein, the first magnification threshold is less than the second magnification threshold. The embodiments of the present application can provide a light source through the white light lamp and the infrared lamp, so as to ensure that the brightness of the environment in which the image acquisition device is located is moderate, thereby improving the quality of the image acquired by the image acquisition device.